【Replacement Air Valves】: The package includes 4 black air valves to replace the inflatable boat's air valves, suitable for inflatable boats with an inflatable valve screw size of 22mm. Please measure the size of the air valve screw before purchasing to avoid it being unusable. 【One-Way Inflation Valve Without Leakage】: The air valve has a one-way closed design, and the rubber pad at the bottom of the air inlet automatically fits the edge of the air inlet for quick inflation, effectively preventing air leakage. 【Quality Assurance】: The inflatable boat's air valve is made of high-quality, high-density ABS plastic, which is not easy to wear and deform, strong and anti-corrosion, and durable. 【WIDE USE】: Whether you use this air valve for inflatable boats, kayaks, lazy spas, inflatable pools, air mattresses, canoes, rafts, or dinghies, it is a practical and effective inflatable accessory. 【WIDE USE】: Whether you use this air valve for inflatable boats, kayaks, lazy spas, inflatable pools, air mattresses, canoes, rafts, or dinghies, it is a practical and effective inflatable accessory.